OpenCountry M/T. Off Road/Mud Terrain. 375/40R24. (35.8X14.8R24) Parada Spec-X. Truck/SUV All Season. 325/45R24. (35.5x12.8R24) Find all 36 inch diameter tires for every wheel size, including the metric and inch equivalent tire sizes available for each tire. Specs Brand. Recommendation. SimpleScore™. What's this? Our proprietary rating system. for the modern tire buyer. 8.0. Good. Score breakdown: 8.2. Long lasting. Great. Thenumber 15, or R15, is the diameter of the wheel (or rim) given in inches. Since the width is a millimeter (metric system) measurement, it is a general practice to convert this measurement to the metric system: 15 x 25.4 = 381 millimeters. This is required when using the metric calculator. 3512.5-R16 tires are 2.22 inches (56.36 mm) larger in diameter than 305/70-R16 tires and the speedometer difference is 6.3%. 3512.5-R17 tires are 0.67 inches (16.92 mm) larger in diameter than 315/70-R17 tires and the speedometer difference is 1.9%. 31575R16. 375/65R16. 385/70R16. SHOP 16 INCH TIRES. There’s nothing quite like a “Sweet 16”. Whether you’re just getting your license or you’re a veteran driver, you can sweeten up your ride with 16-inch tires. We’ve got the biggest inventory of 16” tires in the industry, so you can count on us to get you rolling on the right SymbolN Finish R a μinch R a μm Last Updated: 20 February 2015 Alwaysverify that the load capacity of the new tire is sufficient for your vehicle. The approximate width of metric sized tires can be converted into inches by dividing the branded Section Width in millimeters by 25.4; for example LT285/60R16 285 ÷ 25.4 = 11.2". KaqkV.